Hard-grease cup



Apr. 3, 1923.

F. C. GRANT HARD GREASE CUP Filed June 5, 1921 Patented Apr. 3, 1923.

UNE

FRED C. GRANT, OF SANGERVILLE,MAI1\TE.

HARDGREASE C P.

Application filed June 3, 1921.

T 0 all whom it may concern:

Be it known that FRED C. GRANT, a citizen of the United States of America, residing at Sangerville, in the county of Piscataquis and State of Maine, has invented nfew and useful Improvements in Hard- Grease Cups, of which the following is a specification.

The object of the invention is to provide a simple, comparatively inexpensive and convenient cup for use in holding and feeding hard grease to machinery, the same being of that type wherein the forcible advancement of the lubricant by means of a plunger or follower is necessary to feed the same to the journal or mechanism to be lubricated; and the particular object in view is to provide a cup of this type wherein the refilling thereof is facilitated and expedited to avoid the inconvenience and loss of time incident as with the ordinary cups of this form of reversing or backing the plunger or follower from its fully advanced position to give access to the cup for refilling; and with this object in view the invention consists in a construction and combination of parts of which a preferred embodiment is shown in the accompanying drawings, wherein:

Figure 1 is a sectional view of a grease cup embodying the invention.

Figures 2 and 3 are transverse sectional views respectively on the planes indicated by the line 22 and 33 of Figure 1.

The cup consists essentially of the casing 10 of cylindrical form having a. removable cap or cover 11 fitted thereon and secured for example by means of threads 12, it being obvious that the periphery of said cap may be milled as in the ordinary practice, a feed nozzle 13 having a threaded extremity 14 for engagement with the journal box and containing the usual feed port 15, a follower 16 mounted for movement reciprocably in the casing for advancement gradually toward the feed port to express the contents of the cup as required by the j ournal or hearing, and an operating stem 17 connected with the plunger or follower and having a suitable handle 18.

In the construction illustrated the follower is threaded, as is common in the art for advancement in the expulsion of the grease by rotary movement of the stem, but instead of the follower being threaded directly into the casing or the wall of the eas- Serial No. 474,635.

ing, it is threaded into an inner open ended shell or sleeve 19 which is removably fitted in the casing of the cup, the stem 17 being removably engaged with the follower. as by means of a threaded terminal 20 engaging a central threaded opening 21 in said follower, and the stem being reversible with relation to the follower so as to be adapted to engage the follower from either side of its plane. v

Hence when the contents of the grease cup have been fully discharged by the advancement of the follower through the turning of the stem from the full line position indicated in Figure 1 to the dotted line position in said figure, the disengagement of the stem from the follower and the removal of the cap or cover 11 from the casing will permit of the removal of the shell or sleeve from the casing and the refilling thereof with grease without altering the position of the follower. Thereupon the shell or sleeve may be re-introduced into the casing in a reversed position and the stem re-engaged with the follower in a correspondingly reversed position from that previously 00- cupied, to locate the new charge of grease in advance of the follower without any rearrangement or adjustment of the latter with relation to the shell or sleeve.

In other words when it is required that the cup be recharged it is not necessary to turn the follower back by a reverse movement to its initial position, but merely to remove the follower and the shell in which it is fitted, and after refilling the shell to replace the same with the follower in a reversed position.

In the construction illustrated the stem of the follower is provided with a collar 22 which is interposed in the initial position of the follower between the latter and the cap or cover, to serve as astop for the rotary movement in one direction of the stem with relation to the follower as the former is turned in the direction necessary to advance the follower in the sleeve, and when the follower has been advanced to completely expel the content-s of the cup a double ended retaining pin 23 carried by the follower snaps at its lower end over a spring tongue 2st secured to the bottom of the casing, whereupon a reverse rotary movement of the stem, the follower thus beinglocked against reverse rotary movement, will unscrew the stem and detach it from the follower. The cover or lid may then be removed with the stem and handle after which the sleeve with the follower in the lower end thereof may be removed and the sleeve filled from the upper end with grease. Then reversing the sleeve and replacing the parts as above indicated will restore the cup to an operative condition with the grease in advance of the follower for immediate operation.

Having described the invention, what is claimed as new and useful is 1. A grease cup having an outer casing provided with a removable lid or cover, an

open ended sleeve removably fitted in the casing, a follower fitted in and having threaded engagement peripherally with the sleeve, an operating stem extending through the lid or cover and having a threaded engagement with the follower, and means for preventing reverse rotary movement of the follower to permit of unscrewing the stem therefrom.

2. A grease cup having an outer casing provided with a removable lid or cover, an open ended sleeve remov'ably fitted in the casing, a follower fitted in and having threaded engagement peripherally with the sleeve, an operating stem extending through the lid or cover and having a threaded engagement with the follower, and means for preventing reverse rotary movement of the follower to'permit of unscrewing the stem therefrom, said means consisting of a double ended stop pin on the follower and a yielding tongue carried by the casing in the path of movement of the inner end of said pin.

In testimony whereof he aflixes his signa ture.

FRED C. GRANT. 

